The article discussed the physical properties index of superfine wool fiber. The index consists of morphological characteristic

fineness length

tension strength

moisture absorption

density and thermal properties

and compared these indexes with 70 Sfine wool fiber. The results showed that the longitudinal section shape of Superfine wool fiber was similar to 70 Sfine wool fiber

but compared with other indexes

it had many differences such as their flake shapes were different

the fineness of Superfine wool fiber was more finer than 70 Sfine wool fiber

and its strength

elongation at break and warmth retention rate was higher than that of 70 Swool fiber.